21403200001023 has 8 divisors (see below), whose sum is σ = 31708444446000. Its totient is φ = 14268800000664.

The previous prime is 21403200001021. The next prime is 21403200001049. The reversal of 21403200001023 is 32010000230412.

It is not a de Polignac number, because 21403200001023 - 2¹ = 21403200001021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21403200000987 and 21403200001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403200001021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396355555548 + ... + 396355555601.

It is an arithmetic number, because the mean of its divisors is an integer number (3963555555750).

Almost surely, 2^{21403200001023} is an apocalyptic number.

21403200001023 is a deficient number, since it is larger than the sum of its proper divisors (10305244444977).

21403200001023 is an equidigital number, since it uses as much as digits as its factorization.

21403200001023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792711111158 (or 792711111152 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21403200001023 its reverse (32010000230412), we get a palindrome (53413200231435).

The spelling of 21403200001023 in words is "twenty-one trillion, four hundred three billion, two hundred million, one thousand, twenty-three".